If something is wrong with a cat or dog, the first suspicion of worms immediately arises. Yes, helminthic infestation is very common in pets, especially if they have access to the street. Dogs and cats are affected by helminths in more than 90% of cases and simply cannot not get infected if they are on the street. Even if the animal lives in an apartment all its life and does not go anywhere, then, of course, they have an order of magnitude less chances of contracting intestinal worms, but they also have it. What to do?